Sylvania



(No Model.) 7

G. MORTSON.

PAPER BAG MACHINERY. No. 426,843. PatentedAp-r. 29, 1890.

TIGER VI'IGJG.

, firm asses:

shown, are made slightly larger than the draw- UNITED STATES PATENTOFFICE.

GEORGE MORTSON, OF BRIDGEPORI, CONNECTICUT, vASSIGNOR TO THE UNION PAPERBAG MACHINE COMPANY, OF PHILADELPHIA, PENN- SYLVANIA.

PAPER-BAG MACHINERY.

SPECIFICATION forming part of Letters Patent No. 426,843, dated April29, 1890.

Application filed January 11, 1890.

To all whom it may concern:

Be it known that I, GEORGE MORTSON, a subject of the Queen of GreatBritain, residing-at Bridgeport, county of Fairfield, State ofConnecticut, have invented a new and useful Improvement in Paper-BagMachinery, of which the following is a true and accurate description, inconnection with the drawings forming partof this specification.

My invention relates to that portion of a paper-bag machine whichperforms the function of folding and pasting a web of paper into abellows-folded tube; and it consists in the hereinafter-describedarrangement of drawing and presser rolls in connection with suchmachinery.

In the drawings, Figure 1 is a plan view of my device; Fig. 2, a frontelevation thereof, and Fig. 3 a longitudinal section on the line 00 0cof Fig. l.

C is the frame of the machine; B B B B, drawing-rolls secured on shaftsE E and arranged to engage the bellows-folded tube along its edges, asshown.

A is a narrow presser-roll, and A a broad coacting presser andsupporting roll. 'lhese rolls A A are secured on shafts F F, and, as

ing-rolls and driven by means of the gears D D with the same angularvelocity, and consequently with slightlygreater peripheral velocity.

G is the bellows-folded tube, and g its pasted seam.

The mechanism for folding and applying $erial No. 336,625. (No model.)

paste to the web of paper maybe of any construction, and as it forms nopart of my invention. I have not shown it in the drawings. Having beenfolded and pasted, the tube G is drawn between the drawing-rolls B B BB, and

thence between the presser-rolls A A, and

these latter rolls moving with slightly-greater speed than thedrawing-rolls and acting on the centrally-lying seam, while thedrawingrolls engage the outer edges of the tube, their combined actionis such as to draw the two overlapping edges of the paper together atthe time the seam is pressed and made permanent, this drawing actionbeing in practice just sufficient to counteract and overcome thetendency of the lapping edges to draw apart, which exists, as I believe,in all tube-forming machinery.

By using my device I secure a straight and even seam and a tube of moreregular form than has heretofore been generally obtained.

Having now described my invention, what I claim as new, and desire tosecure by Letters Patent, is Y In a paper-bag machine, the combinationof the drawing-rolls B B B B, arranged to act upon the sides of abellows-folded tube, with pressing-rolls A A, having a slightly-greaterspeed than the drawing-rolls, and the roll A arranged to come over thepasted seam, all substantially as and for the purpose specified.

GEORGE MORTSON.

Witnesses:

A. M. WoosTER, A. B. FAIRCHILD.

